Composition for digester-linings.



I 106. COMPOSITIONS,

Steobins, 528, 40-0,

COATING OR PLASTIC.

PATENTED JAN. 27, 1903. E. HENTSOHEL.

COMPOSITION FOR DIGESTER LININGS.

APPLICATION mum saw. 16, 1902.

no 10mm.

0012.30,].894, 92,1)igesoers.

Hixer,526,33.7,Sep l5,l885, 106-30 U ITED STATES 'HiZ/ ERNST HE N TSOHEL, OF MUSKEGON, MICHIGAN.

COMPOSITION FOR DlGESTER-LININGS.

UPECIFICATION forming part of Letters Patent No. 719,216, dated January 27, 1903.

Application filed September 16, 1902.

To all whom it may concern.-

Be it known that I, ERNST HENTSOHEL, a citizen of the United States,residing at Muskegon, in the county of Muskegon and State of Michigan, have invented an Improvement in Compositions for Digester-Linings, of which the following is a specification.

My invention relates to an acid-proof composition to be employed in the construction of lining of digesters used in connection with the manufacture of paperpulp or paperstock. These digesters are of metal lined with brick, and the acid employed in the treatment of the paper-stock percolates through :5 the brick lining and attacks the metal shell,

gradually destroying the same; and the 0bjcct of my invention is to prevent the acid reaching the metal shell.

In carrying out my invention the composition material employed by me and which constitutes my invention is to be placed between the linings of the digester.

My improved acid-proof composition consists of lithar e, Portland cement, guartz or crushe rerick, glycerin, and l10a e pf sqq t. 111856 materials are employed in substantially the following proportions and weights and are compounded in substantially the following manner: I take about equal proportions bullgof lithar e,Portland cement and "5'" crushed fire-bricE or, otherwise st-ated b yundred pounds of out one hundred pounds of Port an cement and about one hundred poun s 0 mar z or crushed firebrick. These are in a dry statem ouglily and intimately mixed. To a quantity of such mixture as would fill an ordinary barrel, and therefore would weigh about four 40 hundred pounds, I add the glycerin and silicate of soda. The quantity of lycerin employed is about twenty gallonsf and the silicate of soda about four and one-half gallons,

m I Serial No. 123,561. (No specimens.)

these two substances being thoroughly mixed and then added to the dry mixture of litharge, 4 5 Portland cement, and quartz or crushed firebrick, so as to thoroughly moisten and reduce said dry materials to a thin pasty consistency.

To identify the application of my improved composition, I have illustrated the walls of a digester, in which a represents the shell of metal, I) the first lining of brick, and c the second lining of brick. Between these linings there is a vertical space which may be of any desired width, and this space conforms in cross-sectional area to the shape or form of the digester and its lining. This space is filled in solid with my improved composition, which thereafter dries and hardens and forms an impenetrable acid-proof lining to the digesterto such an extent that whatever acid may percolate through the inner brick lining c does not pass through the lining d ofimy improved composition, or even reach the bricl; lining b.

I claim as my invention- 1. The herein-described composition as a lining for digesters, consisting of litharge, Portland cement, quartz or crushed fire-brick, glycerin and silicate of soda. 1 7o 2. The herein-described composition as a lining for digesters, consisting of litharge, Portland cement, quartz or crushed fifF-Bi'ili, aim l cerin and silicate of soda, in about the. prop' orllons omhd'i'wpbunds of litharge, one hundred pounds of Portland cement and one hundred pounds of quartz or crushed fire-brick, and a mixture of about twenty gallons of glycerin and about four and one-half gallons of silicate of sodaadded to said quan- 8o tity of the aforesaid materials in a dry state.

Signed by me this 7th day of August, 1902.

' ERNST HENTSCHEL.

Witnesses:

W. L. SAWYER, W. H. NEWTON. 

